hammond



(No Model.) v 3Sheets-Sheet`1.

J. F. HAMMOND. A

NAIL PLATE EEEDEE. No. 265,599. Patented 001;.' 1o, 1882l...fdl/evitar.-

(No Model.) 3 Sheets-Sheet 2.

' J. F. HAMMOND. v

NAI-L PLATE FEEDER. No. 265,599. Patented 00h. 1o, 1882.

N. PETERS. Phumunwgnpm. wnmmon. u C.

(No Model.) E 3 sheets-sheet 3.

' J. F. HAMMOND.

I NAIL PLATE FEEDER.

Patented Oct. l0, 1882..

` view of the machine.

Unrran STATES PATENT Ormea.

JOHN F. HAMMOND, OF OMAHA, NEBRASKA.

NAI L-PLATE FEEDER.

SPECIFICATION forming part of Letters Patent No. 265,599, dated October10, 1882.

Application filed February 25, 1882. (No model.)

To all whom it may concern:

Be it known that I, JOHN F. HAMMOND, a citizen of theUnited States,residingat Omaha, in the county of Douglas and State of Nebraska, haveinvented certain new and useful Improvements in Nail-Plate Feeders, ofwhich the following is a specification.

My improvements relate in particular to that class of apparatus forfeeding nail plates or blanks to the nail-cutting knives wherein both areciprocating and a rotary motion is imparted to the plate or blank,that the opposite sides of the same may be successively exposed to theaction of the cutters.

In machines of this character as heretofore constructed it has beencustomary to provide what is commonly designated the plate-holdingbarrel,77 by which the plate at the proper time is turned over, withsupplemental feeding mechanism for gripping the plate and regularlyadvancing the same toward the cutters a space .sufficient to form thenext nail as the preceding nail was cut therefrom.

The principal objects of my present invention are to improve the meansfor rotating the plate-holding barrel,to dispense with the supplementalmechanism for gripping and feeding forward the plate, and to substitutefor the same mechanism by which, while the plate is held firmly in thebite of the cutters, the barrel will be caused to recede suddenly ashort distance in order to automatically expose sufticient of the plateto form the succeeding nail. These objects ot' my invention I bestaccomplish by the apparatus hereinafter fully described and particularlyclaimed, and illustrated in the accompanying drawings, forming part ofthis specification.

Figure l is a side view of my improved nailplate feeder, portions of thesame being shown broken away and portions bein g shown in section forbetterillustration. Fig.2 is a frontend Fig. 3 is a vertical sectionalview of the plate-holding barrel and its fittings, and Fig. 4 is ahorizontal sectional view of the same. Fig. 5 is a side view of theeccentric cam and its yoke, a port-ion of the former being broken awayand the top of the latter being omitted for better illustration. Fig. 6isa cross-sectional view of the cam and its yoke'on lines x vof Fig. 5.Fig. 7 is a vertical sectional view of the yoke, the cam being shown inelevation. Fig. 8 is al side view lof the eccentric cam, the detachableportion being shown lifted out of its seat.

Like letters of reference indicate like parts in the several figures ofthe drawings.

A designates the bed of an ordinary nailplate machine, upon Ywhich isheld the cuttingknife M; and B represents the usual form of cutter-bar,carrying the knife L. To the front end of this bed A are attachedbrackets Q, having suitable lugs, P', bolted thereto, through which passthe center screws a', provided with thejam-nuts a2. 0n these centerscrews, as clearly shown in Fig. 2, is pivoted the crosshead O, carryingthe frame O, in which is securely held the bar G, to which is bolted theyoke R, by which the plate-holding barrel is carried.

To a suitable standard, t, upon the top of the yoke R, is bolted thechilled ball T, upon which is held the clamp H, having a movablesection, H2, controlled by the set-screws H3. This clamp is alsoprovided with a socket, within Which, by means ot' the set-screw H4, isheld the end of the rod F, by which a back-and-forth motion is impartedto the barrel from the drivin g mechanism in a manner to be hereinafterdescribed. Through suitable apertures in the sides of the yoke lt passthe center screws p", provided with the jam-nuts p3. Upon these centerscrews is pivotally hung the box-bearing S, provided with suitablepivot-seats, and encircling and supporting between the .flanges K thelong irregular casting designated the barreh7 Around this barrel K isfitted in a manner free to slide thereon the sleeve or collar U,provided at its top and bottom with apertures, through which passset-screws n, having the jam-nuts e', and carrying upon their ends,within the collarU, the friction-rollers e, the purpose of which willhereinafter appear. The collar U is provided on its sides with thetrunnions a, held in suitable bearin gs, m, which move in the slots orways m ,formed in the tops of thestandards N, rising from the bed ofthemachine. From this construction it will be seen that the collar U isincapable of movinglongitudinally, but is susceptible of a vibratorymovement upon its truunions, and also of a vertical movement in theslots or ways m', which is regulated IOO by the set-screws i, passingthrough the standards N to the bottoms of such slots.

Upon the surface of the barrel K are a seiies of inclined planes orcam-ribs, l and l', each extending obliquely a portion of the distancearound the barrel. The function of these ribs is to impart to the barrelthe rotary motion necessary to present successively the opposite facesof the nail-plate to the action of the cutting-knives, and this theyaccomplish as the barrel is drawn back through the collar U, guardedagainst longitudinal movement, as described, by working against thefiictioirrollers e, which are mounted loosely upon the. set screws n n,afixed to said collar.

To the upper surface of the barrel K are attached, by means oftheset-screwsf, two springplates, h h', which project beyond the end b ofthe barrel and clamp and hold this end of the nail-plate g.

It will readily be seen from the construction of the parts as thus farindicated that if a backward movement is imparted to the rod F, andconsequently to the yoke R and its connections, the barrel K will beallowed for a short distance an initial straight backward movement untilthe bearings m in their downward course strike the adjustingscrews t'.As the movement ofthe rod F continues the barrel is tipped or rocked onits trunnions a, so as to cause the end b' to be lifted such dista-nceas to permit the nail-plate to be turned without interference with thebed-knife M, and as the barrel K continues to be drawn through thecollar Uthe cam-ribs l strike the frictionwheels e, and the barrel isthus rotated. The cain-ribs l and l are so placed upon the barrel withreference to each other that as the. barrel is drawn backward two of theribs, l, work against the friction-rollers and produce a quarter of arevolution of the plate, and when the motion is reversed and the barrelis moved forward the remaining ribs, l', work against thefriction-rollers and complete the half-revolution of the barrelnecessary to present the op posite side of the plate to the action ofthe cutting-knives.

My object in giving an initial straight backward movement to the barrelis to permit the saine to be slipped' back upon the nail plate while thelatter is still held firmly in the bite of the cutters a suticientdistance to expose enough of the plate to form the succeeding nail. Asthe nail-plate is held in the bite of the cutters but a very short time,it is obviously necessary that this initial backward movement of thebarrel should be a very rapid one.

I shall now proceed to describe at length the mechanism by which Iimpart the peculiar backend-forth movement to the plate holding barrel.

The rod F is secured by the screw H5 in the seat ofthe clamp H', similarin construction to the clamp H, which is fastened to the chilled ball T,held in a slot at the top of the cainyokc G by the spindle. K2, themovement of which is controlled by the set-screw G2.

The cam-yoke G is journaled in a manner free to vibrate upon the bearing X', held upon the standard X, bolted to the bed of the machine, and ismade of sections suitably bolted together. Around its inner surface thisyoke is provided with a raised guide, C', which works in a correspondingslot, C, in the periphery of the eccentric D, and upon one of its sidesare placed in suitable seats in the yoke two steel plates or shoes, o,one on each side of the raised guide C. These plates c are renderedadjustable by means of the set-screws d', two for each plate, which passthrough the yoke and are furnished with jam-nuts d2.

Within the cam-yoke U works the eccentric cam D, looselyjournaled uponthe main shaft W. This cam D is provided upon its periphery with theflanges C3, forming the groove C, and each of these peripheral flanges Chas an enlargement or cam,f, preferably steel shod, rising abruptly fromits rim. Upon the side of the cam D opposite the enlargements or camsf adepression, h, is formed in the groove C4, so that when the steel platesor shoes t are struck by the camsf as the eccentric cam D revolves, andthe yoke C is thus forced suddenly' to the left, the projecting portionc of the guide C can move freely into the depression h". From thispeculiar construction ot' the eccentric cam it will be readily seen thata portion of the movement ofthe yoke, While acted on by the cams j", isvery rapid, while the remainder is much slower, being such as would beimparted by an ordinary eccentric.

In order that the cam D may be readily placed in position on or removedfrom the main shaft, it is provided with adetachable section, r, havingupon its sides tongues s', adapted to it in corresponding grooves in thebody of the eccentric cam. To hold this section r securely in position,itis furnished with the axial grooves s3, which, with the companiongrooves .s4 in the eccentric cam, receive the retaining-key bolts 'n'.Upon one of its sides the eccentric cam is provided with two lugs, D,having screw-seats to retain the adjusting-screws y y, carrying thejain-nuts y'.

As already stated, the eccentric cam D is itsclfjournaled loosely uponthe main shaft, but it receives motion therefrom through the mcdium ofthe collar E, formed in sections, sccurely bolted together. and keyedfirmly to the shaft. This collar E is provided with a projecting lug orarm, Ef, which lies between the lugs D', and is connected rigidlythereto by means ofthe adjusting-screws y y. This main shaft W alsodrives the cutting mechanism, and it is apparent that by means of thesetscrews y y and the collar E the movement of the eccentric cam withrelation to the action of the cutters can be accurately adjusted. Thenecessity for such adjustment is obvious when it is remembered that thequick initial backward motion given to the plate-carrying barrel mustoccur at the very instant the plate is in the bite of thecutting-knives.

In order to assist the cam-yoke in its forward TOO IOS

IIO

vided, one end of the same being attached to an eye, Y3, in the bed ofthe machine, and the other end being held by the eye Y2, fastened to theyoke.

A nail-plate feeder of the above-described improved construction, whilesimple, I found in practice to be accurate, durable, and effective.

I am aware'that it is not new, broadly, tofeed the nail-plate byreceding the holding-barrel while the plate .is yet retained in the biteof the knives; also, that it is not new to impart to the plate-holdingbarrel its 'entire backward movement bya single operating-rod connectedwith the main shaft; but,

Having thus described my invention, what I claim as new, and desire toprotect by Letters Patent, is-

l. In a nail-plate feeder, the combination, with the main driving-shaft,and with the cutting-knives, ofthe pivoted yoke and the plateholdingbarrel sustained thereby, a connecting-rod to impart to said yoke andbarrel their entire backward movement, and adjustable eccentricmechanism, substantially as described, whereby the relative action ofthe cuttingknives and of the barrel in feeding the nailplate and incutting thev same may be maintained, substantially as set forth.

2. The combination, with the cutting-knives, and with the maindriving-shaft, of an eccentric mounted thereon, a pivoted yoke toencompass said eccentric, a connecting-rod, a pivoted yoke, aplate-holding barrel sustained by said yoke, and an encircling collarprovided with means to engage and rotate the barrel as the same isreciprocated, substantially as set forth.

3. The combination, with the plate-holding barrel having inclined ribs,and a journaled collar provided with means to engage therewith androtate the bar-rel, of a pivoted yoke to sustain said barrel,andmechanism, substantially as described, to rock the yoke,substantially as set forth.

4. The combination, with 'the plate-holding barrel K, provided with thecam-ribs, and the collar U, carrying set-screws and provided withtrunnions, of the standards N, the rocking yoke R, connecting-rod F, andeccentric mechanism for imparting motion to said rod, substantially asdescribed.

5. Thecombination, with the barrel-supporting collar U, having trunnionsthereon, of the slotted standards N, having mechanism for adjusting thevertical movement of said collar, substantially as described.

6. The combination, with the barrel K, having inclined or cam-ribs l, ofthe collar U, having friction-rollers e and trunnion-bearings, theslotted standards N, the sleeve, and the rocking yoke R, substantiallyas described.

7. The combination, with standards N and with the collar U, mounted ontrunnions therein, of the plate-holding barrel K, having camribs, thesleeve, the yoke R, carrying' center screws p, the bar G, and therocking frame O, substantially as described.

8. In a nail-plate feeder, the combination, with the main driving-shaft,of a fixed collar, E, an eccentric cam journaled loosely on said shaft,and a pivoted yoke to encompass the cam, said yoke having adjustableshoes or plates set therein, substantially as set forth.

9. The combination, with the main shaft. of

the fixed collar, the eccentric loosely journaled \8o on said shaft andprovided with adjusting mechanism, the eccentric yoke, the plate-holdingbarrel, and mechanism for communicating motion from the yoke to thebarrel, substantially as described.

10. The combination, with the main shaft, of the fixed clamp E, theeccentric D, having adjusting mechanism, and having an enlargedportiomj", the yoke U, carrying shoes t, the barrel K, and connectingmechanism, substantially as described.

1l. In a nail-plate feeder, the eccentric D, formed with a separablesection, r, said eccentric and section being provided respectively withthe tongues. and grooves, and with keyslots to receive the bolts n',substantially as described.

12. In a nail-plate feeder, the combination, with the eccentric D,havingr the enlargements f', and the yoke (J, provided with the shoes c,

of the spring Y, substantially as described.

JOHN F. HAMMOND.l

Witnesses JAMES RICHARDS, G. T. WALKER.

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